The answer is B. Sitting Bull.
He is seen as the central leader, however there were others Chiefs, primarily Crazy Horse.
Answer:
Chinampa*floating islands* allowed the Aztecs to grow food and build structures
Pyramids
The statement that best explains the reasons for building the Panama Canal across the Isthmus of Panama was to shorten sailing time between the Atlantic and the Pacific Oceans. The correct answer is B.